505 Voltage Controlled Multi Mode Filter
The MULTI MODE FILTER is based on a state variable filter topology (made popular by e.g. the Oberheim SEM) and features low pass, high pass, band pass (12 dB/oct each) and notch mode (6 dB/oct). Outputs are available simultan simultaneously as well as combined at the mixed output, where the filter mode (LP Notch HP) is voltage controlled.
http://www.lunar-experience.com/assets/downloads/505.pdf
This Module is currently available.
$299